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Hash key-based image encryption using crossover operator and chaos

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Abstract

This paper proposes a color image encryption scheme using one-time keys based on crossover operator, chaos and the Secure Hash Algorithm(SHA-2). The (SHA-2) is employed to generate a 256-bit hash value from both the plain-image and the secret hash keys to make the key stream change in each encryption process. The SHA-2 value is employed to generate three initial values of the chaotic system. The permutation-diffusion process is based on the crossover operator and XOR operator, respectively. Experimental results and security analysis show that the scheme can achieve good encryption result through only one round encryption process, the key space is large enough to resist against common attacks,so the scheme is reliable to be applied in image encryption and secure communication.

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Authors and Affiliations

  1. Laboratory of Electronics and Information Technology, National Engineering School of Sfax, Sfax University, B.P.W., 3038, Sfax, Tunisia

    Ramzi Guesmi, Mohamed Amine Ben Farah, Abdennaceur Kachouri & Mounir Samet

Authors
  1. Ramzi Guesmi
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  2. Mohamed Amine Ben Farah
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  3. Abdennaceur Kachouri
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  4. Mounir Samet
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Correspondence to Ramzi Guesmi.

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Guesmi, R., Ben Farah, M., Kachouri, A. et al. Hash key-based image encryption using crossover operator and chaos. Multimed Tools Appl 75, 4753–4769 (2016). https://doi.org/10.1007/s11042-015-2501-0

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  • DOI: https://doi.org/10.1007/s11042-015-2501-0

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